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EN 1.8509 Steel vs. S31266 Stainless Steel

Both EN 1.8509 steel and S31266 stainless steel are iron alloys. They have 43% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.8509 steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 11
40
Fatigue Strength, MPa 580
400
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
81
Shear Strength, MPa 680
590
Tensile Strength: Ultimate (UTS), MPa 1130
860
Tensile Strength: Yield (Proof), MPa 940
470

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1450
1470
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 39
12
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
37
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.6
6.5
Embodied Energy, MJ/kg 22
89
Embodied Water, L/kg 65
220

Common Calculations

PREN (Pitting Resistance) 2.6
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
290
Resilience: Unit (Modulus of Resilience), kJ/m3 2340
540
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 40
29
Strength to Weight: Bending, points 31
24
Thermal Diffusivity, mm2/s 10
3.1
Thermal Shock Resistance, points 33
18

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.38 to 0.45
0 to 0.030
Chromium (Cr), % 1.5 to 1.8
23 to 25
Copper (Cu), % 0
1.0 to 2.5
Iron (Fe), % 95.5 to 97.1
34.1 to 46
Manganese (Mn), % 0.4 to 0.7
2.0 to 4.0
Molybdenum (Mo), % 0.2 to 0.35
5.2 to 6.2
Nickel (Ni), % 0
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.020
Tungsten (W), % 0
1.5 to 2.5